TYPO3.Flow

If any exception occurs while persisting, and a subsequent test also tries to persist, an ORM Exception occurs telling that the Entity manager were closed.
Reproduction code in Functional Test:

 1     /**
 2      * Fine, this throws, as expected, an Exception due to validation problems
 3      * 
 4      * @test
 5      * @expectedException \TYPO3\FLOW3\Persistence\Exception\ObjectValidationFailedException
 6      */
 7     public function firstFailingTestThatCorrectlyThrowsException() {
 8         $invalidAccount = new \TYPO3\FLOW3\Security\Account();
 9         $this->persistenceManager->add($invalidAccount);
10         $this->persistenceManager->persistAll();
11     }
12 
13     /**
14      * This (same code) throws now "Doctrine\ORM\ORMException: The EntityManager is closed." 
15      * 
16      * @test
17      */
18     public function secondFailingTestThatSaysEntityManagerWasClosed() {
19         $invalidAccount = new \TYPO3\FLOW3\Security\Account();
20         $this->persistenceManager->add($invalidAccount);
21         $this->persistenceManager->persistAll();
22     }
23 

Maybe this is some kind related: http://docs.doctrine-project.org/projects/doctrine-orm/en/latest/reference/transactions-and-concurrency.html#exception-handling